Abstract
We report a surgical case of celiac artery aneurysm due to segmental arterial mediolysis. A 41-year-old woman was admitted with sudden abdominal pain and computed tomography (CT) revealed infarction of the spleen and both kidneys. Heparin (5000 units per day) was started and the pain resolved. However, follow-up CT indicated the disappearance of spleen cells and the appearance of a celiac artery aneurysm. She was transported to our hospital for surgery. We performed resection of the aneurysm and revascularization. The patient’s postoperative course was uneventful. The pathological finding was segmental arterial mediolysis (SAM), which is characterized by no inflammation, no arteriosclerosis, fusion of the tunica media, and degeneration of the vascular wall. Patients with SAM show various clinical courses. Virtually all cases are emergencies due to rupture, and this was a rare elective surgery case.
